public override void WriteOutput(OutputContext context)
{
for (var index = 0; index < Elements.Count; index++)
{
var element = Elements[index];
if (!(element is ParentReferenceSelectorElement))
{
context.Append(element);
}
bool isLastElement = index == Elements.Count - 1;
if (element.HasTrailingWhitespace && !isLastElement)
{
var nextElement = Elements[index + 1];
if (element is IdentifierSelectorElement && nextElement is IdentifierSelectorElement)
{
context.Append(' ');
}
else
{
context.AppendOptional(' ');
}
}
}
}
public override void WriteOutput(OutputContext context)
{
using (var scope = context.BeginUndoableScope()) {
context.Append("@media ");
for (var index = 0; index < mediaQueries.Count; index++)
{
if (index > 0)
{
context.Append(", ");
}
var mediaQuery = mediaQueries[index];
context.Append(mediaQuery);
}
context.AppendLine(" {");
using (context.EnterExtenderScope(Extenders))
{
if (context.Append(Block))
{
scope.KeepChanges();
}
}
context.AppendLine("}");
}
}
public override void WriteOutput(OutputContext context)
{
if (block.Statements.Count == 0)
{
return;
}
context.IncreaseIndentLevel();
context.Indent();
for (var index = 0; index < keyframePositions.Count; index++)
{
var keyframePosition = keyframePositions[index];
context.Append(keyframePosition);
if (index < keyframePositions.Count - 1)
{
context.Append(", ");
}
}
context.AppendOptional(' ');
context.AppendLine("{");
context.Append(block);
context.Indent();
context.AppendLine("}");
context.DecreaseIndentLevel();
}
public override void WriteOutput(OutputContext context)
{
if (Block.RuleCount == 0)
{
return;
}
if (context.IsReference)
{
var extenderSelectorList = new SelectorList(Selectors.Selectors.SelectMany(s => context.Extensions.GetExtensions(s, includeReferences: false)));
if (extenderSelectorList.IsEmpty())
{
return;
}
context.Append(extenderSelectorList);
}
else
{
context.Append(Selectors);
}
context.AppendOptional(' ');
context.AppendLine("{");
context.Append(Block);
context.Indent();
context.AppendLine("}");
}
public override void WriteOutput(OutputContext context)
{
context.Append("@namespace ");
context.Append(identifier);
context.Append(' ');
context.Append(ns);
context.Append(';');
}
public override void WriteOutput(OutputContext context)
{
context.Append(QuoteChar);
foreach (var lessStringFragment in parts)
{
context.Append(lessStringFragment);
}
context.Append(QuoteChar);
}
public override void WriteOutput(OutputContext context)
{
context.Append(rangeStart);
if (!string.IsNullOrEmpty(rangeEnd))
{
context.Append('-');
context.Append(rangeEnd);
}
}
public override void WriteOutput(OutputContext context)
{
context.Append(Property);
context.Append(':');
context.AppendOptional(' ');
if (Value != null)
{
context.Append(Value);
}
}
public override void WriteOutput(OutputContext context)
{
if (Modifier != MediaQueryModifier.None)
{
context.Append(Modifier.ToString().ToLowerInvariant() + " ");
}
context.Append("(");
context.Append(rule);
context.Append(")");
}
public override void WriteOutput(OutputContext context)
{
context.Append("@supports");
context.Append(' ');
context.Append(condition);
context.AppendOptional(' ');
context.AppendLine("{");
context.Append(block);
context.AppendLine("}");
}
public override void WriteOutput(OutputContext context)
{
context.Append(prefix);
context.Append(identifier);
if (value != null)
{
context.Append('(');
context.Append(value);
context.Append(')');
}
}
public override void WriteOutput(OutputContext context)
{
context.Append(functionName);
context.Append('(');
if (arguments != null)
{
context.Append(arguments);
}
context.Append(')');
}
public override void WriteOutput(OutputContext context)
{
for (var i = 0; i < FeatureQueries.Count; i++)
{
if (i > 0)
{
context.Append(" and ");
}
var featureQuery = FeatureQueries[i];
context.Append(featureQuery);
}
}
public override void WriteOutput(OutputContext context)
{
for (var index = 0; index < conditions.Count; index++)
{
var supportsCondition = conditions[index];
context.Append(supportsCondition);
if (index < conditions.Count - 1)
{
context.Append(" and ");
}
}
}
public override void WriteOutput(OutputContext context)
{
context.Indent();
context.Append("@import");
context.Append(' ');
context.Append(Url);
if (mediaQueries.Any())
{
context.Append(' ');
WriteQueries(context);
}
context.AppendLine(";");
}
public override void WriteOutput(OutputContext context)
{
foreach (var identifierPart in Parts)
{
context.Append(identifierPart);
}
}
public override void WriteOutput(OutputContext context)
{
context.Indent();
context.Append('@');
context.Append(ruleIdentifier);
context.Append(' ');
context.Append(identifier);
context.AppendOptional(' ');
context.AppendLine("{");
foreach (var keyframe in keyframes)
{
context.Append(keyframe);
}
context.Indent();
context.AppendLine("}");
}
public override void WriteOutput(OutputContext context)
{
context.Indent();
context.Append("@page");
if (additionalSelector != null)
{
context.Append(' ');
context.Append(additionalSelector);
}
context.AppendOptional(' ');
context.AppendLine("{");
context.Append(block);
context.Indent();
context.AppendLine("}");
}
public override void WriteOutput(OutputContext context)
{
if (Modifier != MediaQueryModifier.None)
{
context.Append(Modifier.ToString().ToLowerInvariant() + " ");
}
if (parens)
{
context.Append('(');
context.Append(identifier);
context.Append(')');
}
else
{
context.Append(identifier);
}
}
public override void WriteOutput(OutputContext context)
{
context.Append(LeftOperand);
if (keepSpaces)
{
context.AppendOptional(' ');
}
context.Append(Operator);
if (keepSpaces)
{
context.AppendOptional(' ');
}
context.Append(RightOperand);
}
public override void WriteOutput(OutputContext context)
{
context.Indent();
context.Append("@");
context.Append(identifier);
if (value != null)
{
context.Append(' ');
context.Append(value);
}
context.AppendOptional(' ');
context.AppendLine("{");
context.Append(block);
context.Indent();
context.AppendLine("}");
}
public override void WriteOutput(OutputContext context)
{
using (var scope = context.BeginUndoableScope()) {
context.IncreaseIndentLevel();
bool hasOutput = false;
for (var index = 0; index < Statements.Count; index++)
{
var statement = Statements[index];
if (statement is Rule r)
{
// Rules may exist within media queries, but are only indented and semicolon-terminated within rule blocks
context.Indent();
hasOutput |= context.Append(r);
bool isLast = index == Statements.Count - 1;
if (isLast)
{
context.AppendOptional(';');
}
else
{
context.Append(';');
}
context.AppendLine();
}
else
{
hasOutput |= context.Append(statement);
}
}
if (hasOutput)
{
scope.KeepChanges();
}
context.DecreaseIndentLevel();
}
}
public override void WriteOutput(OutputContext context)
{
bool isWhitespaceSeparator = char.IsWhiteSpace(Separator);
for (var index = 0; index < Values.Count; index++)
{
var expression = Values[index];
context.Append(expression);
if (index < Values.Count - 1)
{
context.Append(Separator);
if (!isWhitespaceSeparator)
{
context.AppendOptional(' ');
}
}
}
}
public void Compile(string inputFileName)
{
var context = new EvaluationContext(new LessTreeParser(), new FileResolver(new FileSystem(), inputFileName));
var rootNode = context.ParseCurrentStylesheet(isReference: false);
var evaluated = rootNode.EvaluateSingle <Stylesheet>(context);
var outputContext = new OutputContext(' ', 4);
outputContext.Append(evaluated);
Console.WriteLine(outputContext.GetCss());
}
protected void AssertLessUnchanged(string input)
{
EvaluationContext context = new EvaluationContext(new LessTreeParser(), GetFileResolver(input));
var currentStylesheet = context.ParseCurrentStylesheet(isReference: false);
var evaluated = currentStylesheet.EvaluateSingle <Stylesheet>(context);
var output = new OutputContext(' ', 2);
output.Append(evaluated);
Assert.Equal(input.Trim(), output.GetCss().Trim());
}
public override void WriteOutput(OutputContext context)
{
bool first = true;
foreach (var node in (IEnumerable <LessNode>)measurements)
{
if (!first)
{
context.Append(' ');
}
node.WriteOutput(context);
first = false;
}
}
private void WriteQueries(OutputContext context)
{
bool first = true;
foreach (var node in (IEnumerable <LessNode>)mediaQueries)
{
if (!first)
{
context.Append(',');
context.AppendOptional(' ');
}
node.WriteOutput(context);
first = false;
}
}
public override void WriteOutput(OutputContext context)
{
var outputSelectors = Selectors
.Concat(Selectors.SelectMany(s => context.Extensions.GetExtensions(s, includeReferences: true)))
.Distinct()
.ToList();
for (var index = 0; index < outputSelectors.Count; index++)
{
context.Indent();
var selector = outputSelectors[index];
context.Append(selector);
if (index < outputSelectors.Count - 1)
{
context.AppendLine(",");
}
}
}
public override void WriteOutput(OutputContext context)
{
context.Append("progid:");
context.Append(Filter);
context.Append('(');
for (var index = 0; index < FilterExpressions.Count; index++)
{
var filterExpression = FilterExpressions[index];
context.Append(filterExpression);
if (index < FilterExpressions.Count - 1)
{
context.Append(", ");
}
}
context.Append(')');
}
public override void WriteOutput(OutputContext context)
{
context.Append(Value);
context.Append(" !important");
}
